Following wheelchair walking stabilizing auxiliary device adapting to complex road conditions
By installing components such as a U-shaped support plate and angle sensors on the wheelchair, the system automatically detects tipping signals and drives the synchronous wheels to rotate, solving the problem of wheelchair tipping over in complex road conditions and improving the stability and safety of the wheelchair.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN NAOXINGZHE ZHIXING TECHNOLOGY CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-17
AI Technical Summary
Existing wheelchair stabilization devices are insufficient to ensure the safety of wheelchairs in complex road conditions, often requiring manual activation of the tilting mechanism to ensure safety.
An auxiliary device was designed, comprising components such as a U-shaped support plate, an angle sensor, a push rod, a rack, and a synchronous wheel. The angle sensor captures a tilting signal, triggering the push rod to push the rack, which in turn drives the synchronous wheel and support rod to rotate, preventing the wheelchair from tilting further.
It automatically prevents wheelchairs from tipping over in complex road conditions, ensuring the safety of personnel, simplifying operation, and improving the stability and safety of wheelchairs in unstable environments.
Smart Images
Figure CN224126194U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wheelchair following walking assistance technology, specifically a wheelchair following walking stability assistance device adapted to complex road conditions. Background Technology
[0002] A wheelchair is a wheeled mobility aid primarily used to help people with mobility impairments move around and perform daily activities. For people who have difficulty walking or are unable to walk due to physical disabilities, injuries, illnesses, old age, or other reasons, wheelchairs are an important means of transportation, enabling them to move freely indoors and outdoors, expand their range of activities, and increase their independence and convenience in life. The main function of wheelchair assistive devices is to follow the wheelchair and ensure its safety and stability during movement.
[0003] Most existing wheelchair stabilization devices are relatively simple and cannot ensure the stability of the wheelchair in a timely manner. When the wheelchair tilts backward, it is often necessary to manually trigger the tilting device to ensure the safety of the wheelchair. However, this method is difficult to guarantee the safety of the person in a timely manner. Therefore, we propose a wheelchair stabilization assist device that adapts to complex road conditions. Utility Model Content
[0004] The purpose of this invention is to provide a stabilizing assistive device for wheelchair movement that adapts to complex road conditions, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a wheelchair-following stability assist device adapted to complex road conditions, including a wheelchair, wherein an assist component is installed on the bottom of the wheelchair, and the main function of the assist component is to assist the wheelchair in moving and maintain its stability.
[0006] The auxiliary components include a U-shaped support plate fixed to the bottom of the wheelchair seat, a base plate fixed to the top of the wheelchair bottom support rod, a fixing block fixed to the center of the top right side of the base plate, a support rod installed at the bottom of the U-shaped support plate, two sets of first baffles symmetrically fixed to the top right side of the wheelchair, a second rotating shaft rotatably connected to the opposite side of the two sets of first baffles, two sets of U-shaped through slots symmetrically opened on the left side of the base plate, the two sets of U-shaped through slots being adapted to and corresponding one-to-one with the base, a hole opened at the top of the base, the second rotating shaft passing through the hole, and the two sets of bases being rotatably connected to the second rotating shaft.
[0007] Furthermore, two sets of gears are coaxially and symmetrically fixedly connected to the opposite sides of the two sets of bases. The two sets of gears are coaxial with the second rotating shaft. A push rod is fixed to the left side of the fixed block. A push plate is fixed to the output end of the push rod. Two sets of racks are symmetrically fixed to the left side of the push plate. The two sets of racks are adapted to the gears.
[0008] Furthermore, the top of the base plate has two sets of first sliding grooves at the two sets of racks, and the inner walls of the two sets of first sliding grooves are slidably connected to first sliders. The two sets of first sliders correspond one-to-one with the racks and are fixedly connected.
[0009] Furthermore, two sets of arc-shaped plates are symmetrically fixed on the left and right sides of the bottom of the base, and auxiliary hubs are rotatably connected to the opposite sides of the two sets of arc-shaped plates.
[0010] Furthermore, a first rotating shaft is rotatably connected to the inner wall of the left side of the base plate facing each other. Two sets of first synchronous pulleys are symmetrically and coaxially fixed to the outer wall of the first rotating shaft. Two sets of second synchronous pulleys are coaxially fixed to the outer walls of the left and right ends of the second rotating shaft. The two sets of second synchronous pulleys are connected to the two sets of first synchronous pulleys through a synchronous belt. The two sets of first synchronous pulleys are fixedly connected to the support rod facing each other. A hole is opened at the top of the support rod for the first rotating shaft to pass through.
[0011] Furthermore, an angle sensor is fixedly connected to the top center of the U-shaped support plate, and two sets of second baffles are symmetrically fixed to the bottom of the base plate near the two sets of U-shaped through slots. A second sliding groove is opened on the left outer wall of each of the two sets of second baffles, and a second slider is slidably connected to the inner wall of each of the two sets of second sliding grooves. A damping rod is rotatably connected to the left outer wall of each of the two sets of second sliders, and the end of each of the two sets of damping rods away from the second slider is rotatably connected to the base.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a wheelchair and auxiliary components, when the wheelchair is on a normal and stable surface, the auxiliary components will not be triggered. At this time, the auxiliary wheel hub will move with the wheelchair. When the wheelchair tilts backward, the angle sensor will quickly capture the signal and immediately transmit the signal to the push rod. At this time, the push rod will push the two sets of racks forward, thereby rotating the base clockwise. At the same time, the rotation of the second rotating shaft will synchronously drive the first rotating shaft to rotate, forcing the support rod to rotate clockwise, thereby contacting the ground and preventing the wheelchair from tilting further. Through the above design, it is possible to prevent the wheelchair from tilting backward and ensure the safety of the personnel. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0014] Figure 2 This is a schematic diagram of the rear structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the auxiliary component structure of this utility model;
[0016] Figure 4 This is a partial structural diagram of the auxiliary component of this utility model;
[0017] Figure 5 This is a schematic diagram of the bottom structure of the base plate of this utility model;
[0018] Figure 6 This is a schematic diagram of the top structure of the base plate of this utility model.
[0019] In the diagram: 1. Wheelchair; 2. Assistive component; 3. U-shaped support plate; 4. Base plate; 5. Angle sensor; 6. Fixing block; 7. Push rod; 8. First baffle; 9. U-shaped through groove; 10. Support rod; 11. First pivot; 12. First synchronous pulley; 13. Synchronous belt; 14. Second synchronous pulley; 15. Second pivot; 16. Arc plate; 17. Auxiliary hub; 18. Base; 19. First slider; 20. Rack; 21. Gear; 22. First slide groove; 23. Damping rod; 24. Second baffle; 25. Second slide groove; 26. Second slider. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1-6 A wheelchair stabilization assistive device adapted to complex road conditions includes a wheelchair 1, with an assistive component 2 installed on the bottom of the wheelchair 1. The main function of the assistive component 2 is to assist the wheelchair in moving and maintain its stability.
[0022] When using wheelchair 1, there will be two situations. One is when wheelchair 1 is moving on a level surface. At this time, the displacement of wheelchair 1 is stable, and the auxiliary wheel hub 17 will move with wheelchair 1. The auxiliary wheel hub 17 will not hinder the normal movement of wheelchair 1, and the person in wheelchair 1 can move normally.
[0023] Another scenario is when wheelchair 1 tilts backward while walking. At this time, the angle sensor 5 located on the top of the U-shaped support plate 3 at the rear of wheelchair 1 will immediately capture the signal of angle change and classify the signal as a tilting signal. The signal is then transmitted to the push rod 7, which, after processing, causes the push rod 7 to start immediately and push the push plate to the left, thereby activating the auxiliary component 2 and preventing wheelchair 1 from tilting further.
[0024] In this embodiment, the auxiliary component 2 includes a U-shaped support plate 3 fixed to the bottom of the wheelchair 1 seat. A base plate 4 is fixed to the top of the bottom support rod of the wheelchair 1. A fixing block 6 is fixed to the center of the top right side of the base plate 4. A support rod 10 is installed at the bottom of the U-shaped support plate 3. Two sets of first baffles 8 are symmetrically fixed to the top right side of the wheelchair 1. The opposing sides of the two sets of first baffles 8 are rotatably connected to a second rotating shaft 15. Two sets of U-shaped through slots 9 are symmetrically opened on the left side of the base plate 4. The two sets of U-shaped through slots 9 are adapted to and correspond one-to-one with the base 18. A hole is opened at the top of the base 18. The second rotating shaft 15 passes through the hole. The two sets of bases 18 are rotatably connected to the second rotating shaft 15. Two sets of gears 21 are symmetrically fixed to the opposing sides of the two sets of bases 18. The two sets of gears 21 are coaxial with the second rotating shaft 15. A push rod 7 is fixed to the left side of the fixing block 6. A push plate is fixed to the output end of the push rod 7. Two push plates are symmetrically fixed to the left side of the push plate. Two sets of racks 20 are adapted to gears 21. The top of the base plate 4 is provided with two sets of first sliding grooves 22 at the two sets of racks 20. The inner walls of the two sets of first sliding grooves 22 are slidably connected to first sliders 19. The two sets of first sliders 19 correspond one-to-one with the racks 20 and are fixedly connected. The bottom of the base 18 is symmetrically fixed with two sets of arc plates 16 on the left and right sides. The opposing side of the two sets of arc plates 16 is rotatably connected to auxiliary hubs 17. The opposing side of the left inner wall of the base plate 4 is rotatably connected to a first rotating shaft 11. The outer wall of the first rotating shaft 11 is symmetrically and coaxially fixed with two sets of first synchronous pulleys 12. The outer walls of the left and right ends of the second rotating shaft 15 are coaxially fixed with two sets of second synchronous pulleys 14. The two sets of second synchronous pulleys 14 and the two sets of first synchronous pulleys 12 are connected by a synchronous belt 13. The opposing side of the two sets of first synchronous pulleys 12 is fixedly connected to a support rod 10. The top of the support rod 10 is provided with a hole for the first rotating shaft 11 to pass through.
[0025] Specifically, after the angle sensor 5 captures and processes the signal, it transmits it to the push rod 7, causing the push rod 7 to push the push plate to the left, forcing the two sets of racks 20 to slide inside the first slide groove 22. It should be noted that the bottom of the rack 20 is designed with two sets of first sliders 19, which are slidably set inside the first slide groove 22. The main purpose of this design is to facilitate the precise displacement of the rack 20. At the same time, on the top left side of the base plate 4, two sets of first baffles 8 are symmetrically fixed. A second rotating shaft 15 is rotatably connected between the first baffles 8. The second rotating shaft 15 passes through the two sets of bases 18, and two sets of gears 21 are designed on the opposite side of the base 18 and are coaxially fixed with it. The gears 21 are coaxial with the second rotating shaft 15 and are fixed to the outer wall of the base 18. This design allows the two sets of bases 18 to rotate clockwise when the rack 20 moves to the left.
[0026] When the two sets of bases 18 rotate clockwise, the two sets of auxiliary wheel hubs 17 at the bottom of the bases 18 will rotate accordingly. Simultaneously, a first rotating shaft 11 is designed on the inner wall of the top right side of the U-shaped support plate 3. Two sets of coaxial first synchronous wheels 12 are designed on the outer walls of both ends of the first rotating shaft 11. The two sets of first synchronous wheels 12 are connected to the second synchronous wheel 14 through a synchronous belt 13. The second synchronous wheel 14 is coaxially fixed with the second rotating shaft 15. This design can realize that when the second rotating shaft 15 rotates, the first rotating shaft 11 also rotates. Two sets of support rods 10 are fixed on the opposite side of the first synchronous wheels 12. The support rods 10 can support the wheelchair 1. The above design is synchronous and continuous. The purpose is that when the wheelchair 1 tilts, the auxiliary wheel hubs 17 and the support rods 10 rotate clockwise synchronously, and ensure that the wheelchair 1 does not continue to tilt backward in the first time, thus ensuring the safety of the person in the wheelchair 1.
[0027] Additional notes: An angle sensor 5 is fixedly connected to the top center of the U-shaped support plate 3; two sets of second baffles 24 are symmetrically fixed to the bottom of the base plate 4 near the two sets of U-shaped through slots 9; a second sliding groove 25 is opened on the left outer wall of each set of second baffles 24; a second slider 26 is slidably connected to the inner wall of each set of second sliding grooves 25; a damping rod 23 is rotatably connected to the left outer wall of each set of second sliders 26; and the end of each set of damping rods 23 away from the second slider 26 is rotatably connected to the base 18.
[0028] Two sets of damping rods 23 are designed at the bottom of the base plate 4 near the base 18. One end of the damping rod 23 is rotatably connected to the base 18, and the other end is rotatably connected to the second slider 26. The second slider 26 is slidably set in the second groove 25 inside the second baffle 24. The main purpose of this design is to ensure that the damping rods 23 can provide a certain force whether the wheelchair 1 is in normal condition or when it is tipping over, thereby ensuring the stability of the wheelchair 1 and strengthening the guarantee of personnel safety.
[0029] Finally, once the tipping of wheelchair 1 is prevented, it can be corrected by the people in the vehicle to return wheelchair 1 to a normal state. At the same time, angle sensor 5 will capture the signal and force support rod 10 and auxiliary wheel hub 17 to return to a normal state.
[0030] Working principle: After the angle sensor 5 captures and processes the signal, it is transmitted to the push rod 7, causing the push rod 7 to push the push plate to the left, forcing the two sets of racks 20 to slide inside the first slide groove 22. It is important to note that the bottom of the rack 20 is designed with two sets of first sliders 19, which are slidably disposed inside the first slide groove 22. The main purpose of this design is to facilitate precise displacement of the rack 20. Simultaneously, on the top left side of the base plate 4, two sets of first baffles 8 are symmetrically fixed, and a second rotating shaft 15 is rotatably connected between the first baffles 8. The second rotating shaft 15 passes through the two sets of bases 18, and two sets of gears 21 are coaxially fixed to the opposite side of the bases 18. The gears 21 are coaxial with the second rotating shaft 15 and fixed to the outer wall of the bases 18. This design allows the two sets of bases 18 to rotate clockwise when the rack 20 moves to the left. When the two sets of bases 18 rotate clockwise, the two sets of auxiliary wheel hubs 17 at the bottom of the bases 18 will rotate accordingly. Simultaneously, a first rotating shaft 11 is designed on the inner wall of the top right side of the U-shaped support plate 3. Two sets of coaxial first synchronous wheels 12 are designed on the outer walls of both ends of the first rotating shaft 11. The two sets of first synchronous wheels 12 are connected to the second synchronous wheel 14 through a synchronous belt 13. The second synchronous wheel 14 is coaxially fixed with the second rotating shaft 15. This design can realize that when the second rotating shaft 15 rotates, the first rotating shaft 11 also rotates. Two sets of support rods 10 are fixed on the opposite side of the first synchronous wheels 12. The support rods 10 can support the wheelchair 1. The above design is synchronous and continuous. The purpose is to ensure that when the wheelchair 1 tilts, the auxiliary wheel hubs 17 and the support rods 10 rotate clockwise synchronously and ensure that the wheelchair 1 does not continue to tilt backward in the first time, thus ensuring the safety of the person in the wheelchair 1.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A walking stability aid for a wheelchair for following a complex route, comprising a wheelchair (1), characterized in that: The wheelchair (1) is equipped with an auxiliary component (2) at its bottom. The main function of the auxiliary component (2) is to assist the wheelchair in moving and to maintain its stability. The auxiliary component (2) includes a U-shaped support plate (3) fixed to the bottom of the wheelchair (1) seat. A base plate (4) is fixed to the top of the bottom support rod of the wheelchair (1). A fixing block (6) is fixed to the center of the top right side of the base plate (4). A support rod (10) is installed at the bottom of the U-shaped support plate (3). Two sets of first baffles (8) are symmetrically fixed to the top right side of the wheelchair (1). A second rotating shaft (15) is rotatably connected to the opposite side of the two sets of first baffles (8). Two sets of U-shaped through slots (9) are symmetrically opened on the left side of the base plate (4). The two sets of U-shaped through slots (9) are adapted to and correspond one-to-one with the base (18). A hole is opened at the top of the base (18). The second rotating shaft (15) passes through the hole. The two sets of bases (18) are rotatably connected to the second rotating shaft (15).
2. The walking stability aid for a wheelchair according to claim 1, wherein: Two sets of gears (21) are coaxially and symmetrically fixedly connected to the opposite sides of the two sets of bases (18). The two sets of gears (21) are coaxial with the second rotating shaft (15). A push rod (7) is fixed on the left side of the fixed block (6). A push plate is fixed at the output end of the push rod (7). Two sets of racks (20) are symmetrically fixed on the left side of the push plate. The two sets of racks (20) are adapted to the gears (21).
3. The walking stability aid for a wheelchair according to claim 2, wherein: The top of the base plate (4) is provided with two sets of first sliding grooves (22) at two sets of racks (20). The inner walls of the two sets of first sliding grooves (22) are slidably connected with first sliders (19). The two sets of first sliders (19) correspond one-to-one with the racks (20) and are fixedly connected.
4. The walking stability aid for a wheelchair according to claim 2, wherein: Two sets of arc-shaped plates (16) are symmetrically fixed on the left and right sides of the bottom of the base (18), and auxiliary hubs (17) are rotatably connected to the opposite side of the two sets of arc-shaped plates (16).
5. The walking stability aid for a wheelchair according to claim 1, wherein: The inner wall of the left side of the base plate (4) is rotatably connected to a first rotating shaft (11). The outer wall of the first rotating shaft (11) is symmetrically and coaxially fixed with two sets of first synchronous pulleys (12). The outer walls of the left and right ends of the second rotating shaft (15) are coaxially fixed with two sets of second synchronous pulleys (14). The two sets of second synchronous pulleys (14) are connected to the two sets of first synchronous pulleys (12) through a synchronous belt (13). The two sets of first synchronous pulleys (12) are fixedly connected to the support rod (10) on the opposite side. The top of the support rod (10) is provided with a hole through which the first rotating shaft (11) passes.
6. The walking stability aid for a wheelchair according to claim 1, wherein: An angle sensor (5) is fixedly connected to the top center of the U-shaped support plate (3). Two sets of second baffles (24) are symmetrically fixed at the bottom of the base plate (4) near the two sets of U-shaped through grooves (9). A second sliding groove (25) is opened on the left outer wall of each of the two sets of second baffles (24). A second slider (26) is slidably connected to the inner wall of each of the two sets of second sliding grooves (25). A damping rod (23) is rotatably connected to the left outer wall of each of the two sets of second sliders (26). The end of each of the two sets of damping rods (23) away from the second slider (26) is rotatably connected to the base (18).